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Petrogenetic study of mesoproterozoic volcanic rocks of North Delhi fold belt, NW Indian shield: implications for mantle conditions during Proterozoic

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Chinese Journal Of Geochemistry 2015年第1期34卷 93-114页

作者： m.S.Azam m.shamim khan m.Raza IGNOU Regional Center Department of Geology AMU

mesoproterozoic North Delhi fold belt of NW Indian shield comprises three volcano-sedimentary basins viz. Bayana, Alwar and Khetri aligned parallel to each other from east to west. Each basin contains excellent exposures of mafic volcanic rocks. major, trace and rare earth element abundances of volcanic rocks of the three basins are significantly diverse. Bayana and Alwar volcanics are tholeiites bearing close similarity with low Ticontinental flood basalts. However, Bayana volcanics are characteristically enriched in incompatible trace elements and REEs while Alwar volcanics display least enriched incompatible trace element abundances and flat REE patterns. The Khetri volcanics exhibit a transitional composition between tholeiite and calc-alkaline basalts. REE based source modeling suggests that Bayana suite was formed from the melts derived from 1 % to 10 %(avg.4 %) of the partial melting of a spinel lherzolite source giving a residual mineralogy of 56 % Olv, 25 % Opx and19 % Cpx. Whereas Alwar suite evolved through 12 %–20 %(avg. 15 %) partial melting of the same source with a residual mineralogy 61 % Olv, 25 % Opx and 14 % *** volcanics are exposed at two localities Kolihan and madhan–Kudhan. The Kolihan volcanics were derived from 1 % to 6 %(avg. 4 %) partial melting with residualmineralogy 56 % Olv, 25 % Opx and 19 % Cpx whereas the magma of madhan Kudhan volcanic suite was generated by 15%–30 % partial melting of the same source leaving behind 64 % Olv, 25 % Opx and 11 % Cpx as residual mineralogy. This source modeling proves that melts of Bayana and Alwar tholeiites were generated by partial melting of a common source within the spinel stability field under the influence of mantle plume. During the course of ascent, Bayana melts were crustally contaminated but Alwar melts remained unaffected. There was two tier magma production in Khetri region, one from the partial melting of the mantle wedge overlying the subducted oceanic plate which formed Kolihan

关键词：基性火山岩中元古代西印度地幔柱褶皱带岩石成因西北地盾

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Building the metaverse using digital twins at all scales,states,and relations

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Virtual Reality & Intelligent Hardware 2022年第6期4卷 459-470页

作者： Zhihan LV Shuxuan XIE Yuxi LI m.shamim HOSSAIN Abdulmotaleb El SADDIK Department of Game Design Faculty of ArtsUppsala UniversitySweden College of Computer Science and Technology Qingdao UniversityQingdaoChina Department of Software Engineering College of Computer and Information SciencesKing Saud UniversityRiyadhSaudi Arabia School of Electrical Engineering and Computer Science(EECS) University of OttawaOttawaOntarioCanada

Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the *** objects can be at the micro-,meso-,or *** metaverse is a complex collection of solid,liquid,gaseous,plasma,and other uncertain ***,the metaverse integrates tangibles with social relations,such as interpersonal(friends,partners,and family)and social relations(ethics,morality,and law).This review introduces some principles and laws,such as broken windows theory,small-world phenomenon,survivor bias,and herd behavior,for constructing a Digital Twins model for social ***,from multiple perspectives,this article reviews mappings of tangible and intangible real-world objects to the metaverse using the Digital Twins model.

关键词： Digital twins metaverse Sensor

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Turning Trash into Treasure: Developing an Intelligent Bin for Plastic Bottle Recycling

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Journal of Social Computing 2024年第1期5卷 1-14页

作者： Sirajam munira Niloy Paul md Ashraful Alam md.mahmudur Rahman m.shamim Kaiser Institute of Information Technology Jahangirnagar UniversityDhaka 1342Bangladesh

Plastic pollution has emerged as a major global concern due to its enduring nature and limited recycling *** response to this critical challenge,this paper presents a novel approach utilizing a Detection-Based Reward System(DBRS)alongside an innovative business model to promote effective plastic waste management,reduce plastic waste accumulation in the nature,and uphold environmental *** the YOLOv5 algorithm for its exceptional accuracy,speed,and open-source availability,plastic bottle detection becomes a pivotal aspect of this *** seamlessly enroll in the system,triggering an automated detection process that computes reward points corresponding to their deposited plastic *** reward points are meticulously stored within a centralized *** its operational facets,this comprehensive system encompasses a robust business model,strategically poised to capture widespread engagement with waste disposal practices,thereby contributing to the realization of Sustainable Development Goals(SDGs)geared towards fostering a healthier ***,the DBRS attains cutting-edge performance in plastic bottle detection,boasting an impressive mean Average Precision(mAP)of 0.973,underscoring its efficacy in tackling plastic pollution.

关键词： smart environment reward system YOLOv5 deep learning business model

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Towards machine Learning Based Intrusion Detection in IoT Networks

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Computers, materials & Continua 2021年第11期69卷 1801-1821页

作者： Nahida Islam Fahiba Farhin Ishrat Sultana m.shamim Kaiser md.Sazzadur Rahman mufti mahmud A.S.m.Sanwar Hosen Gi Hwan Cho Institute of Information Technology Jahangirnagar UniversityDhakaBangladesh Department of Computer Science Nottingham Trent UniversityNottinghamUK Division of Computer Science and Engineering Jeonbuk National UniversityJeonju54896Korea

The Internet of Things(IoT)integrates billions of self-organized and heterogeneous smart nodes that communicate with each other without human *** recent years,IoT based systems have been used in improving the experience in many applications including healthcare,agriculture,supply chain,education,transportation and traffic monitoring,utility services ***,node heterogeneity raised security concern which is one of the most complicated issues on the *** security measures,including encryption,access control,and authentication for the IoT devices are ineffective in achieving *** this paper,we identified various types of IoT threats and shallow(such as decision tree(DT),random forest(RF),support vector machine(SVm))as well as deep machine learning(deep neural network(DNN),deep belief network(DBN),long short-term memory(LSTm),stacked LSTm,bidirectional LSTm(Bi-LSTm))based intrusion detection systems(IDS)in the IoT environment have been *** performance of these models has been evaluated using five benchmark datasets such as NSL-KDD,IoTDevNet,DS2OS,IoTID20,and IoT Botnet *** various performance metrics such as Accuracy,Precision,Recall,F1-score were used to evaluate the performance of shallow/deep machine learning based *** has been found that deep machine learning IDS outperforms shallow machine learning in detecting IoT attacks.

关键词： IoT shallow machine learning deep learning data science IDS

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Range extension of four highland agamid lizards in Shimshal Pamir,Pakistan

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Journal of Arid Land 2012年第1期4卷 77-84页

作者： Babar khan Waseem AHmED Abdukadir Ablimit shamim FAKHRI Hassan ALI Pakistan Wildlife Foundation Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences World Wide Fund for Nature Pakistan Zoological Survey Department

As part of the Sino-Pak trans-boundary cooperation for conservation and sustainable development in Pamir border region, World Wild Fund （WWF）-Pakistan conducted a preliminary social, economic and ecological survey in the ShimshaI-Pamir Lakes area in July 2009. The purpose of the study was to explore potentials and opportunities for future collaborative conservation of some species, habitats and high altitude ecosystems in the border region between China and Pakistan. The two-week herpetological study in the Shimshal Pamir area of Khunjerab National Park （KNP） along Pakistan-China border was an integral part of the survey, conducted exclu- sively to document reptilian fauna with a special emphasis on investigating their occurrence, distribution and status in the study area. Field investigations were performed during daytime when it was hot enough and reptiles were active, basking or feeding. A total of 15 specimens belonging to four species of the Agamidae family were captured by striking stones and beating bushes with sticks. Collected specimens were preserved using 10% formalin solution, tagged with field information and stored in Zoological Survey Department, Karachi for future reference. Laboratory investigations were carried out for pholidosic counts and morphometric measurements. A detailed review of relevant literature, habitat characteristics and laboratory investigations revealed the occurrence of Laudakia himalayana, L. pakistanica, L. tuberculata and L. badakhshana at 4,082 m, 4,172 m, 4,005 m and 4,240 m asl, respectively, which are much higher altitudes as compared to the previously reported heights of 3,353 m, 3,200 m, 2,500 m and 2,400 m asl. The terrain offers a variety of ecological barriers, in the form of fast and freezing running waters and massive glaciers with peculiar harsh climatic conditions prevailing for nine months of the year, which restricts species migration and thus increases endemism. Although one of the four species recorded from the

关键词： Laudakia himalayana L. pakistanica L. tuberculat L. badakhshana Agarnidae Gilgit-Baltistan Khunjerab National Park Pakistan

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Geochemistry of Palaeoproterozoic Rocks of Aravalli Supergroup: Implications for Weathering History and Depositional Sequence

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International Journal of Geosciences 2017年第10期8卷 1278-1299页

作者： Pavanesh K. Singh m. shamim khan Department of Geology Aligarh Muslim University Aligarh India

The Paleoproterozoic Aravalli Supregroup of rocks, hosted in Aravalli Craton of NW shield, is deposited in shallow and deep water conditions. The major lithologies are phyllites and quartzites with significant components of greywacks and dolomite. Geochemical indices in particular, CIA (Chemical Index of Alteration) values (avg. phyllites: 51.6 - 81.5, avg. quartzites: 57.4 - 95.5) calculated from the data of clastic rocks of ASG suggest minimum to highly intense weathering in the source region. Other indices including PIA, CIW and ICV along with plot patterns on the A-CN-K diagram also nearly endorse CIA based interpretation. These rocks possess relatively high Th/U ratios compared to that found in fresh igneous rocks or their high grade metamorphic equivalents. This high Th/U ratio is neither a source inheritance nor a result of oxidation state rather a manifestation of Th hosting mineral accumulation through sorting. Viewed in the context of present stratigraphic succession, the weathering history adduced from geochemistry does not seem compatible but matches well with earlier classification scheme wherein the evolution of Aravalli Supergroup was considered episodic.

关键词： Clastic Geochemistry Aravalli Supergroup Rajasthan Palaeoweathering Indian Shield

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Interaction of tetradecyltrimethylammonium bromide with bovine serum albumin in different compositions: Effect of temperatures and electrolytes/urea

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Chinese Journal of Chemical Engineering 2021年第1期34卷 279-287页

作者： Joynal Abedin shamimmahbub mohammad majibur Rahman Anamul Hoque Dileep Kumar Javed masood khan Ahmed m.El-Sherbeeny Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Chemistry&Physics Gono BishwabidyalaySavarDhaka 1344Bangladesh Department of Environmental Sciences Jahangirnagar UniversitySavarDhaka 1342Bangladesh 4 Division of Computational Phys ics Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh CityViet Nam Faculty of Applied Sciences Ton Duc Thang UniversityHo Chi Minh CityViet Nam Department of Food Science and Nutrition Faculty of Food and Agricultural SciencesKing Saud University2460Riyadh 11451Saudi Arabia Industrial Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia

Herein,the interaction of a protein,bovine serum albumin(BSA),with tetradecyltrimethylammonium bromide(TTAB,a cationic surfactant),has been investigated using the conductivity measurement technique in pure water and some sodium salts(NaCl,Na_(2) SO_(4),Na_(2) CO_(3), and Na_(3) PO_(4)) solutions at temperature range of 295.15-320.15 *** reveal that,in the plot of specific conductivity versus the concentration of TTAB,only a single critical micelle concentration(cmc) was found for the TTAB+BSA mixed system in all solvents media *** addition of BSA in aqueous TTAB solution,the value of cmc undergoes a change from its pure form,which indicates the presence of strong interaction operating between the BSA and TTAB *** aqueous system,the cmc values of the TTAB+BSA mixtures are obtained higher compared to the values found for single TTAB surfactant However,the addition of salt decreases the cmc value of mixed TTAB+BSA *** values of cmc of the BSA+TTAB mixed system at 310.15 K and 1.00 mmol·kg^(-1) ionic strength of salt followed the order:cmc_(Na_(2) CO_(3))> Cmcc_(Na_(3) PO_(4))> cmcNaCl>cmC_(Na_(2) SO_(4)).The cmc values of TTAB+BSA mixture were found to be lowered in urea solution within the concentrations *** values of degree of dissociation(α) and fraction of counter ion binding(β) were found to be dependent on additives and *** free energy of micellization(AGm) is negative for all the systems,which manifests that the micellization phenomenon is energetically *** enhancement of the negative value of △G_(m)^(0) in aqueous salt solutions reveals an increase of spontaneity of the TTAB+BSA micellization *** values of △G_(m)^(0) also reveal that the spontaneity of micelle formation is enhanced at higher temperatures in all media *** values of free energy of transfer(△G_(m,t)^(o)) were also determined for numerous solvent media used in the present study and described with appropriate reasoning.

关键词： TTAB BSA Conductivity Electrolyte Exothermic interaction

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Fully inkjet-printed microwave passive electronics

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microsystems & Nanoengineering 2017年第1期3卷 423-429页

作者： Garret mcKerricher mohammad Vaseem Atif shamim King Abdullah University of Science and Technology(KAUST) IMPACT LabComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisionThuwal 23955-6900Saudi Arabia

Fully inkjet-printed three-dimensional(3D)objects with integrated metal provide exciting possibilities for on-demand fabrication of radio frequency electronics such as inductors,capacitors,and *** date,there have been several reports of printed radio frequency components metallized via the use of plating solutions,sputtering,and low-conductivity *** metallization techniques require rather complex fabrication,and do not provide an easily integrated or versatile *** work utilizes a novel silver ink cured with a low-cost infrared lamp at only 80℃,and achieves a high conductivity of 1×10^(7) S m^(−1).By inkjet printing the infrared-cured silver together with a commercial 3D inkjet ultraviolet-cured acrylic dielectric,a multilayer process is *** using a smoothing technique,both the conductive ink and dielectric provide surface roughness values of m.A radio frequency inductor and capacitor exhibit state-of-the-art quality factors of 8 and 20,respectively,and match well with electromagnetic *** components are implemented in a lumped element radio frequency filter with an impressive insertion loss of 0.8 dB at 1 GHz,proving the utility of the process for sensitive radio frequency applications.

关键词： capacitor filter inductor inkjet printing multi-jet radio frequency silver

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Biochemical investigations during in vitro adventitious shoot regeneration in leaflet explants from nodal segments of a mature Albizia procera tree

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Journal of Forestry Research 2016年第3期27卷 699-705页

作者： Ekta Rai Sulochna Bouddha shamim Akhtar Ansari Genetics and Plant Propagation Division Tropical Forest Research Institute Jabalpur 482021 India Institute of Forest Productivity Lalgutwa Ranchi 835303India

The in vitro adventitious shoot differentiation in leaflet explants of an adult tree differed from that of leaflet explants of seedlings of Albizia procera（Roxb.）Benth. reported previously elsewhere. The leaflet explants from an adult tree passed through an initial callus phase for30 days on mS medium supplemented with 3 % sucrose,2.5 l m 2,4-D followed by a subsequent adventitious shoot differentiation phase for another 30 days on half mS medium supplemented with 0.25 l m each of BA and *** regeneration rate of in vitro adventitious shoots in explants from the adult tree, i.e.1.66 shoots/callus, was lower than that from seedlings, i.e. [10 shoots/callus,which was reported elsewhere. Correspondingly, the activities of nitrate reductase and peroxidase, and endogenous phenol content remained very low during in vitro adventitious shoot differentiation in leaflet explants of an adult tree possibly due to lower availability of competent stem（juvenile） cells for the process.

关键词： Adventitious shoot differentiation Nitratereductase activity Peroxidase activity Phenol Solublesugar

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Flexible and reconfigurable radio frequency electronics realized by high-throughput screen printing of vanadium dioxide switches

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microsystems & Nanoengineering 2020年第1期6卷 369-380页

作者： Weiwei Li mohammad Vaseem Shuai Yang Atif shamim ImPACT Lab ComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisiornKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia

Smart materials that can change their properties based on an applied stimulus are in high demand due to their suitability for reconfigurable electronics,such as tunable filters or *** particular,materials that undergo a metal–insulator transition(mIT),for example,vanadium dioxide(VO 2)(m),are highly attractive due to their tunable electrical and optical properties at a low transition temperature of 68°*** deposition of this material on a limited scale has been demonstrated through vacuum-based fabrication methods,its scalable application for large-area and high-volume processes is still *** printing can be a viable option because of its high-throughput fabrication process on flexible *** this work,we synthesize high-purity VO 2(m)microparticles and develop a screen-printable VO 2 ink,enabling the large-area and high-resolution printing of VO 2 switches on various *** electrical properties of screen-printed VO 2 switches at the microscale are thoroughly investigated under both thermal and electrical stimuli,and the switches exhibit a low ON resistance of 1.8 ohms and an ON/OFF ratio of more than *** electrical performance of the printed switches does not degrade even after multiple bending cycles and for bending radii as small as *** a proof of concept,a fully printed and mechanically flexible band-pass filter is demonstrated that utilizes these printed switches as reconfigurable *** on the ON and OFF conditions of the VO 2 switches,the filter can reconfigure its operating frequency from 3.95 to 3.77 GHz without any degradation in performance during bending.

关键词： dioxide vanadium bending

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